Improvement in machines for making spiral-wire springs



n iuiiiii i u iiiiiiiiiiii AM PHUf/J ITHOGRAFHM 60 N QSBHIVES PROCESS) im N ` T BAGGOTT. Y i Improvement in Machines for` Making Spiral Wire Springs. H5413",

` A short shaft, F, is supported in boxes upon To all whom .it mag/Q. concern: i

Maryland, have invented an Improved Ma# chine.

. may be cut up into lengths 4suitable for spiral of," October 13,1868, for Weaving wire-cloth,l

` ing-pulley, C, communicating a continuous fixed in the bearings E. in such manner as to `trrni1xn1s BAceorr, ou BALTIMORE, MARYLAND, Assrexon 'ro HIMsELF JNrrED S1-raras f AND GEORGE` J. DUFUR, OF SAME PLACE.

MAKING SPIRAL-WIRE SPRINGS.

. specification forming part of Letters-.Patent No. 115,413, dated May 3o, 1871.

Be it `known that I,` {DH-onus BAGGorT, of the city and countyof Baltimore and State of:

chine for Making `Spiral-fire Springs 5 and l do hereby declare thatthe following is a full, clear, andexact description of the same, reference being had to the annexed drawing making part of this specification, in which- 1 Figure I is a perspective view, and Fig. 2 is a vertical longitudinal section of the ma- The same letters are employed in both the figures in the designation of identicalparts.

The purpose of the machine is to wind wire into a continuousspiral of uniform pitch, which springs or used, as in Amy'patent No. 83,019,

or for other purposes.`

My improvement consists in the use of a short screw-former having an oscillatory rotation on its own axis, around which the spiral is formed 5 and. also in the use of spring-bearings for one end of the threaded former, and in the combinations to be specically indicated inthe following specification and claims.

In the annexed drawing, A indicates the frame of the machine, and B the driving-shaft, which is revolved by the crank F, or by other means, if preferred. On the shaftB isa drivmotion, by means of thebelt G, to the head D. This head turns ou a tubular bearing, E,

be in extension ofthe line of the former G.

the standards F2. *On the outer overhun g end` is the pinion F1, and in the other end is a socket to receive aspirallythreaded former, G. This is a rod having cut on itsperiphery by a set-screw, or in other manner commonly employed in such cases. The pinion F1 meshes into a segmental rack, H, which receives an oscillatory motion by means of the arms H1 i and H2, united by a pivot, the latter being attached to the wrist of the crank. Other means may be adopted for giving an oscillatory motion to the spiral former G. In order that the former Gv may be maintained in a right line with the bore ofthe tube E springs D are fastened to the face of the Vhead D, and so arranged that they shall bear against the former IG on opposite sides and form a bearing for it outside of the Wire coiled around the former.

The wire is wound around a spool, I, and its end carried up and Wound around the spirallygrooved former G, in the spiral groove, and

`carried between the springs D' and into the tube E, through which the coiled Wire is delivered.

y By revolving the "shaft B a continuous revolution will be given to the head D and an oscillatory or reciprocating revolution to the shaft F and spirally-grooved former G. As the former G revolves to the right it will draw the wire from the spool and wind it in the groove, which will give it the required spiral form; and as the former G revolves to the left it will feed the Wire wound around it off from the point into the tube E. To relieve the friction the point of the former, after it passes the springs D', may be tapered, as Yshown in Fig. 2.

By the use of this machine the wire will be delivered in a continuous coil, and it may then be cut into such lengths as may be desired. The former G being overhung no impediment isoffered to the continuous delivery ofthe coiled wire. Where the-former G is of sufficient diameter to give it the requisite rigidity the springs Dl have no other function than to` hold the wire in coil around the former until i it receives the requisite set, and other devices rrcn.

'In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

THOMAS BAGGOTT.

Witnesses:

J oHN A. RILEY, CONRAD MEIsE. 

